ci: optimize build rpm workflow with apisix-build-tools v2.2.0 (#2133)

Author: qsliu2017

.github/workflows/auto-build-rpm.yml

@@ -29,6 +29,16 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v2
 
+      - uses: docker/setup-buildx-action@v1
+
+      - uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-apisixdashboard-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-apisixdashboard-
+            ${{ runner.os }}-buildx-
+
       - name: Extract branch name
         id: branch_env
         shell: bash
@@ -39,7 +49,7 @@ jobs:
         run: |
           export VERSION=${{ steps.branch_env.outputs.version }}
           sudo gem install --no-document fpm
-          git clone -b v2.1.0 https://github.com/api7/apisix-build-tools.git
+          git clone -b v2.2.0 https://github.com/api7/apisix-build-tools.git
 
           # move codes under build tool
           mkdir ./apisix-build-tools/apisix-dashboard
@@ -50,7 +60,7 @@ jobs:
           if [ "$VERSION" != "merge" && "$VERSION" != "master" ];then
             export checkout=release/${VERSION}
           fi
-          make package type=rpm app=dashboard version=${VERSION} checkout=${checkout} image_base=centos image_tag=7 local_code_path=./apisix-dashboard
+          make package type=rpm app=dashboard version=${VERSION} checkout=${checkout} image_base=centos image_tag=7 local_code_path=./apisix-dashboard buildx=True
 
       - name: Run centos7 docker and mapping apisix into container
         run: |